Scroll in selected split with PageUp and PageDown (#2081)

CHANGELOG.md

@@ -22,6 +22,7 @@
 - Minor: Show channels live now enabled by default
 - Minor: Bold usernames enabled by default
 - Minor: Improve UX of the "Login expired!" message (#2029)
+- Minor: PageUp and PageDown now scroll in the selected split (#2070, #2081)
 - Bugfix: Fix bug preventing users from setting the highlight color of the second entry in the "User" highlights tab (#1898)
 - Bugfix: Fix bug where the "check user follow state" event could trigger a network request requesting the user to follow or unfollow a user. By itself its quite harmless as it just repeats to Twitch the same follow state we had, so no follows should have been lost by this but it meant there was a rogue network request that was fired that could cause a crash (#1906)
 - Bugfix: /usercard command will now respect the "Automatically close user popup" setting (#1918)

src/widgets/settingspages/KeyboardSettingsPage.cpp

@@ -66,6 +66,10 @@ KeyboardSettingsPage::KeyboardSettingsPage()
     form->addRow(new QLabel("Ctrl + P"), new QLabel("Open Settings menu"));
     form->addRow(new QLabel("F5"),
                  new QLabel("Reload subscriber and channel emotes"));
+
+    form->addItem(new QSpacerItem(16, 16));
+    form->addRow(new QLabel("PageUp"), new QLabel("Scroll up"));
+    form->addRow(new QLabel("PageDown"), new QLabel("Scroll down"));
 }
 
 }  // namespace chatterino

src/widgets/splits/SplitInput.cpp

@@ -450,6 +450,20 @@ void SplitInput::installKeyPressedEvent()
         {
             this->openEmotePopup();
         }
+        else if (event->key() == Qt::Key_PageUp)
+        {
+            auto &scrollbar = this->split_->getChannelView().getScrollBar();
+            scrollbar.offset(-scrollbar.getLargeChange());
+
+            event->accept();
+        }
+        else if (event->key() == Qt::Key_PageDown)
+        {
+            auto &scrollbar = this->split_->getChannelView().getScrollBar();
+            scrollbar.offset(scrollbar.getLargeChange());
+
+            event->accept();
+        }
     });
 }